The companies listed in Luxembourg are predominantly large, established firms with significant employee numbers, indicating a mature industrial and technological landscape. Many operate in heavy industries and manufacturing, alongside a strong presence in IT and specialized services. ArcelorMittal is a global leader in steel and mining, Ferrero produces confectionery, and Eurofins offers analytical testing services. Aperam is a global stainless steel company, SES Satellites delivers connectivity solutions, and the University of Luxembourg focuses on research.
A notable pattern among these companies is the prevalence of headquarters in Luxembourg City itself, with several other major players located in nearby towns such as Betzdorf and Esch-sur-Alzette. This suggests a concentrated hub for large-scale operations and R&D activities within the Grand Duchy.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
ArcelorMittalarcelormittal.com
A global leader in steel and mining, producing safe, sustainable steel for various industries, with a focus on research, development, and responsible operations |
63,308 | |||
| 2 |
Ferreroferrerocareers.com
A family-owned business producing iconic confectionery products sold worldwide, committed to quality, innovation, and sustainability, offering diverse career opportunities |
32,545 | |||
| 3 |
Eurofinseurofins.com
An international life sciences company offering analytical testing services in food, environmental, pharmaceutical, and cosmetic industries, ensuring safety and authenticity |
24,896 | |||
| 4 |
Aperamaperam.com
A global stainless steel company prioritizing sustainability, producing steel with high recycled content and renewable energy sources, and focusing on long-lasting, affordable solutions |
7,169 | |||
| 5 |
SES Satellitesses.com
Delivering global content connectivity solutions through a vast network of satellites to enrich personal stories and connect more people worldwide |
6,903 | |||
| 6 |
University of Luxembourgwwwen.uni.lu
Multilingual, international University in Luxembourg focusing on research, offering a multicultural environment with over 60 degrees and strong international rankings |
3,226 | |||
| 7 |
PM Internationalpm-international.com
Global leader in developing, manufacturing, and distributing premium health, fitness, and beauty products with a focus on quality and innovation. |
2,725 | |||
| 8 |
Armacellarmacell.com
Innovative provider of thermal, acoustic, and mechanical solutions utilizing engineered foams for global energy efficiency and sustainable value creation |
1,712 | |||
| 9 |
Netcompany-Intrasoftnetcompany.com
A leading European IT Solutions and Services Group, offering innovative solutions to international and national public and private organizations worldwide |
1,687 | |||
| 10 | 1,512 | ||||
| 11 |
CSM Bakery Solutionscsmingredients.com
Company rebranding from bakery solutions to ingredients, focusing on innovation, sustainability, people, and growth updates on LinkedIn. |
1,472 | |||
| 12 |
FANUC Europefanuc.eu
Provides CNC systems, industrial robots, and factory automation solutions for automotive, aerospace, electronics, and healthcare industries across Europe. |
1,465 | |||
| 13 |
Paul Wurth S.A.paulwurth.lu
Design and construction of blast furnaces, cokemaking, direct reduction, recycling plants with engineering, project management, and digital services. |
1,314 | |||
| 14 |
SWM Internationalswmintl.com
Development of sustainable, safe, and intelligent lightweight materials using botanicals and natural fibres to address industry challenges. |
1,304 | |||
| 15 |
Zitrozitrogames.com
Innovative international gaming company specializing in video bingo games, known for its cutting-edge technology, innovations, and top talent in Barcelona |
1,251 | |||
| 16 |
CERATIZITceratizit.com
Develops and produces hard material cutting and wear protection solutions including specialized cutting tools, inserts, rods, carbide, and cermet grades. |
1,249 | |||
| 17 |
Cebi Groupcebi.com
A global leader in pumps, washer systems, and temperature sensors for automotive and household appliances, with 11 production sites and worldwide distribution |
1,100 | |||
| 18 |
IEE Sensingiee-sensing.com
Global leader in developing and manufacturing advanced sensing solutions for automotive, building management, security, sports, and healthcare applications with a strong focus on innovation and R&D |
1,087 | |||
| 19 |
SaarGummi Groupsaargummi.com
A global full service supplier specializing in body seals and mouldings, offering expertise in materials development, product design, and complex sealing systems |
1,045 | |||
| 20 |
Luxembourg Institute of Science and Technology (LIST)list.lu
Research and technology organization developing market-oriented prototypes, transforming scientific knowledge into technologies, data, and tools for stakeholders. |
881 | |||
| 21 |
Eurofins Consumer Product Testingeurofins.com
Specializing in non-food consumer product testing, the company offers tailored quality assurance solutions, from supplier assessment to compliance, including testing, inspections, and regulatory guidance globally |
734 | |||
| 22 |
Rotarexrotarex.com
A global leader in designing and manufacturing premium gas control products, solving customer challenges and providing innovative solutions worldwide |
720 | |||
| 23 |
Jindal Filmsjindalfilms.com
Development and manufacture of specialty films for flexible packaging and labeling, offering barrier and recyclable film solutions globally. |
717 | |||
| 24 |
ArcelorMittal Downstream Solutionscorporate.arcelormittal.com
A global team under ArcelorMittal provides steel solutions to various industries, emphasizing growth, leadership development, and international opportunities |
595 | |||
| 25 |
ArcelorMittal Europeeurope.arcelormittal.com
Leading producer of flat and long steel products for automotive, construction, and packaging sectors through extensive research, development, and distribution networks across Europe. |
588 | |||
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| 26 |
Tracteltractel.com
A global safety specialist offering innovative height safety, load measurement, lifting, access solutions, and services for industrial, construction, energy, and infrastructure projects |
578 | |||
| 27 |
VTS Groupvtsgroup.com
A leading supplier of air handling units and heating equipment, offering innovative products at competitive prices with a focus on employee development and a strong work culture |
512 | |||
| 28 |
CSM Ingredientscsmingredients.com
Global manufacturer of innovative food ingredients and tailored solutions serving artisanal, industrial, foodservice, and retail sectors worldwide. |
493 | |||
| 29 |
ArcelorMittal Luxembourgluxembourg.arcelormittal.com
A steel production company in Luxembourg with 8 sites, specializing in long products like beams and rails for construction and infrastructure projects |
463 | |||
| 30 |
Socfinsocfin.com
Specializing in oil palm and rubber tree plantations, this company manages 15 projects across Africa and Southeast Asia, focusing on expertise and social adaptability |
376 | |||
| 31 | 338 | ||||
| 32 |
UNITED CAPSunitedcaps.com
Designs, produces high-performance plastic caps and closures. Offers advanced standard and bespoke solutions to safeguard product integrity, assure safety, and protect brand reputation. |
317 | |||
| 33 |
Ravago Chemicalsravagochemicals.com
Global provider of high-quality chemical materials and specialty additives, offering tailored solutions, value-added services, and comprehensive product portfolio for various industries worldwide |
290 | |||
| 34 |
Faymonville Trailers to the MAXfaymonville.com
It manufactures special vehicles for heavy transport, offering solutions for loads from 20t to 500t, with a focus on innovation. |
272 | |||
| 35 |
OCSiAl Grouptuball.com
A global leader in manufacturing graphene nanotubes with unique properties for various industries, offering nanotube concentrates to enhance materials |
229 | |||
| 36 |
Kyoteckyotecgroup.com
Specialist in complex, multi-material building envelopes focusing on energy-efficient façades for large-scale architectural and environmental projects. |
190 | |||
| 37 |
TOPIC Embedded Systemstopic.nl
Develops embedded systems, including software and hardware, for high-tech companies across various sectors, offering consultancy, projects, and proprietary products. |
163 | |||
| 38 |
Laboratoires Reunislabo.lu
The company focuses on providing quality healthcare services through research and technology, specializing in personalized medicine, genetic testing, and molecular diagnostics for infectious diseases |
107 | |||
| 39 |
Nivalis Energy Europee-mobility.solaredge.com
Innovative e-mobility solutions for electric and hybrid vehicles, including powertrains, batteries, chargers, and vehicle control units for superior performance |
101 | |||
| 40 |
ClearSpaceclearspace.today
In-orbit service missions enabling a sustainable space industry, akin to a tow truck service for outer space, offered by ClearSpace |
90 | |||
| 41 |
Gradel S.à r.l.gradel.lu
Gradel is an innovative, quality-driven company specializing in specialized equipment for nuclear maintenance, satellite handling, glass industry, and ultralightweight structures across industries |
84 | |||
| 42 |
LuxSpaceluxspace.lu
Luxembourg-based company specializing in designing, manufacturing, and testing microsatellites and aerospace systems, offering innovative services to international agencies and the space industry |
76 | |||
| 43 |
Bétons Feidt S.Abetonsfeidt.lu
A leading concrete manufacturer in Luxembourg and the Greater Region, offering a wide range of ready-mix concretes and prefabricated products to meet various construction needs |
69 | |||
| 44 |
Rakuten Europecorp.rakuten.eu
A global internet services leader offering e-commerce, fintech, digital content, and communication solutions to 16 billion members worldwide through diverse business units in Europe |
67 | |||
| 45 |
NoMachinenomachine.com
A global network computing company with headquarters in Luxembourg, delivering remote connectivity solutions to consumers, businesses, government, and education sectors worldwide |
61 | |||
| 46 |
EmTroniXemtronix.lu
This company designs and produces advanced electronics and embedded software for the New Space industry, offering solutions for various technological needs |
46 | |||
| 47 |
AutoTunerautotuner.com
A next-generation chiptuning tool with Boot, bench, and OBD compatibility, intuitive software, data logging, and strong automotive electronics background |
35 | |||
| 48 |
Odysseus Spaceodysseus.space
Develops space-to-ground laser communication solutions for high data transfer, including optical ground stations, satellite terminals and space-to-drone optical systems. |
34 | |||
| 49 | 28 | ||||
| 50 |
Ypso-Factoypsofacto.com
Ypso-Facto develops and optimizes (bio)processes, providing software and consultancy services for process modeling, simulation, data analysis, and more |
24 | |||
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How this list is built
Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 12, 2026.
More company lists in Luxembourg
- The largest companies in Luxembourg 799
- Multinational companies in Luxembourg 340
- Financial services firms in Luxembourg 255
- Financial Services companies in Luxembourg 171
- Critical infrastructure operators in Luxembourg 79
- Investment Management companies in Luxembourg 75
- Venture capital and private equity firms in Luxembourg 71
- Manufacturers in Luxembourg 59
- Professional services firms in Luxembourg 56
- IT Services and IT Consulting companies in Luxembourg 42
- SaaS companies in Luxembourg 41
- Corporate groups and holding companies in Luxembourg 39
- Consulting firms in Luxembourg 37
- Retail chains in Luxembourg 37
- IT services companies in Luxembourg 37
- Software Development companies in Luxembourg 36
- Banking companies in Luxembourg 34
- Public sector organisations in Luxembourg 34
- Family-owned companies in Luxembourg 32
- Logistics companies in Luxembourg 31
- Construction companies in Luxembourg 30
- Transportation, Logistics, Supply Chain and Storage companies in Luxembourg 30
- Insurance companies in Luxembourg 29
- Hardware manufacturers in Luxembourg 28